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Fantom [35]
4 years ago
9

How to do this problem

Mathematics
1 answer:
andre [41]4 years ago
3 0
The area is 53 kkkkkkkkkkkkk
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Answer:

we need a picture

Step-by-step explanation:

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Which equation is represented by the graph below?
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The y-intercept is at 6.
The slope of the line is 2/3.

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What's the answer need help!!
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The 200 meter race times at a state track meet are normally distributed with a mean of 13.56 seconds and a standard deviation of
storchak [24]

The approximate probability that a runner chosen at random will have a 200 meter time less than 13.5 seconds is 0.4880 ⇒ A

Step-by-step explanation:

To find the probability of a random variable X which has a normal distribution do that

  • If X < b, find the z-score using the formula z = (b - μ)/σ, where μ is the mean and σ is the standard deviation
  • Use the normal distribution table of z to find the corresponding area to the left of z-score

∵ The 200 meter race times at a state track meet are normally

   distributed with mean of 13.56 seconds and a standard deviation

   of 2.24 seconds

∴ μ = 13.56

∵ σ = 2.24

- We need to find the probability that a runner chosen at random

   will have a 200 meter time less than 13.5 seconds

∵ X < 13.5

∴ b = 13.5

- Find z-score

∵ z=\frac{13.5-13.56}{2.24}=-0.02679

- Use the normal distribution table to find the area corresponding to z

∵ The corresponding area of z ≅ -0.03 is 0.4880

∴ P(x < 13.5) = 0.4880

The approximate probability that a runner chosen at random will have a 200 meter time less than 13.5 seconds is 0.4880

Learn more:

You can learn more about the probability in brainly.com/question/4625002

#LearnwithBrainly

5 0
4 years ago
Three times the measure of an angle is 14 less than the measure of its complement. what's the measure of the angle?
allsm [11]
X = original angle

3x = (90-x) - 14
3x = -x + 76
4x= 76
x = 19

The measure of the angle is 19 degrees
8 0
4 years ago
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